dt/usb: Eliminate users of of_platform_{,un}register_driver

Get rid of users of of_platform_driver in drivers/usb.  The
of_platform_{,un}register_driver functions are going away, so the
users need to be converted to using the platform_bus_type directly.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 759a12f..54240f6 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1180,7 +1180,7 @@
 #endif
 
 #ifdef OF_PLATFORM_DRIVER
-	retval = of_register_platform_driver(&OF_PLATFORM_DRIVER);
+	retval = platform_driver_register(&OF_PLATFORM_DRIVER);
 	if (retval < 0)
 		goto error_of_platform;
 #endif
@@ -1239,7 +1239,7 @@
  error_sa1111:
 #endif
 #ifdef OF_PLATFORM_DRIVER
-	of_unregister_platform_driver(&OF_PLATFORM_DRIVER);
+	platform_driver_unregister(&OF_PLATFORM_DRIVER);
  error_of_platform:
 #endif
 #ifdef PLATFORM_DRIVER
@@ -1287,7 +1287,7 @@
 	sa1111_driver_unregister(&SA1111_DRIVER);
 #endif
 #ifdef OF_PLATFORM_DRIVER
-	of_unregister_platform_driver(&OF_PLATFORM_DRIVER);
+	platform_driver_unregister(&OF_PLATFORM_DRIVER);
 #endif
 #ifdef PLATFORM_DRIVER
 	platform_driver_unregister(&PLATFORM_DRIVER);